Home / 208,089,719.30-312,040,100.55-78,654,311.30

Finding the Fourth Proportional to 208,089,719.30, 312,040,100.55 and 78,654,311.30

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Solution

The fourth proportional to 208,089,719.30, 312,040,100.55 and 78,654,311.30 is: 117,945,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,089,719.30 : 312,040,100.55 = 78,654,311.30 : x
  2. Step 2: Convert to fraction form
    208,089,719.30/312,040,100.55 = 78,654,311.30/x
  3. Step 3: Cross multiply
    208,089,719.30x = 312,040,100.55 × 78,654,311.30
  4. Step 4: Simplify right side
    208,089,719.30x = 24,543,299,206,743,000
  5. Step 5: Solve for x
    x = 24,543,299,206,743,000/208,089,719.30
  6. Step 6: Final answer
    x = 117,945,755.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.